I will have to put that on my next fix list. They never worked when I bought the truck 10 yrs ago. But never really needed them I'm a daylight to dark person.
Its in the "shop" thread in the west coast section of Fullsizebronco, but if you have any questions just shoot me a P.M. It was a suprisingly easy swap. But only get about 6 m.p.g. so not very economical.................